Arnica porsildiorum explained

Arnica porsildiorum is an Arctic species of flowering plant in the family Asteraceae. It is native to Russia, Alaska, Northwest Territories and Yukon Territory.^{[1] [2]}

Notes and References

1. Boivin, Joseph Robert Bernard 1948. Le Naturaliste Canadien 75: 210
2. http://www.tropicos.org/Name/2728762 Tropicos, Arnica porsildiorum B. Boivin